K39 4G 1.83-inch Screen Kids Smart Watch Video Calling SOS GPS Positioning Student Camera Watch - Black+Yellow ?Adapt to multi-frequency 4G networks to improve the stability of video and voice calling ?The watch only accepts calls from white list numbers and automatically blocks unknown or spam calls,creating a safe use experience for children ?Real time voice message chat enables private chats and family group communication for real-time connection with children,fostering closer parent-child relationships ?Empowered by a high-capacity battery and intelligent power-saving algorithms,our device ensures extended usage for up to one week ?High-precision positioning,providing parents with safeguard for kids ?With SOS call function,parents can set 3 emergency contacts ?Specification: ?Material: ABS+PC ?Lens: Glass semi-transparent coated mirror lens ?Strap: liquid soft silicone strap ?Waterproof: IP67 ?Maximum charging voltage: 5.0V ?Battery capacity: 800mAh ?Standby time: 6-7 days ?Call time: 5-6 hours ?Battery voltage: 3.8V ?Material: polymer battery ?Display type: IPS ?Display size: 1.83" ?Pixel: 240*284 ?Capacitive touch screen: CTP capacitive touch screen ?CPU: ASR3603S ?WiFi: built-in chip ?GPS: support ?Ringtone: yes ?Hands-free: Yes ?Speaker: yes high-quality speaker ?Microphone: yes anti-interference receiver ?Buttons: 2 ?Headphone jack: NO ?Charging interface: Magnetic charging interface ?SIM card slot: 1 ?Camera: yes 8W ?Video call: Support APP video call ?Network communication: ?GSM: 900 1800 ?WCDMA: B1 B2 B5 B8 ?FDD-LTE: B1 B2 B3 B5 B7 B8 B20 ?Position: ?GPS: support ?WiFi: yes ?AGPS: Class12 ?LBS: Yes ?Phone book: YES,15 family numbers are set according to the main binder,which can realize quick dialing and menu search to make calls. ?Micro chat function: Voice two-way group micro chat function ?MMS: NO ?EMS: NO ?Email: NO ?App function (IOS+Android): ?Two-way call + APP video call: supports two-way call,and blocks other harassing calls,supports APP video call ?Micro chat: Implement group micro chat function on APP and watch ?Baby settings: You can set the baby's avatar,birthday,nickname,etc. ?Message reminder: can remind the status of entering and exiting the electronic fence,low or full battery status,and SOS alarm push ?Adding multiple babies: Multiple baby watches can be added in one app ?Historical track query: You can query the baby?��s historical track within 1 month ?Historical track playback function: tracks can be played automatically ?WIFI positioning + GPS positioning + base station assisted positioning: WiFi positioning accuracy is 3-50 meters,GPS positioning accuracy can reach 3-10 meters,and LBS accuracy can reach 100-500 meters ?Battery power monitoring: You can know the battery power of your baby watch at any time ?The network automatically adjusts the time for the watch: After binding,the watch automatically synchronizes with the network time Package included: ?1 x Smart Watch ?1 x Charging Cable ?1 x English User Manual